Date: 25 April 2025, Friday
Time: 4:30 pm
Venue: Room FYW-3316, City University of Hong Kong
Zoom Meeting ID: 899 0158 1173
Password: 123456
Speaker: Mr Charles Liu, City University of Hong Kong
Transient Stability of Grid-Connected Converters: Effects of Synchronization Control, Output Regulation, and Converter Interaction
Mr Charles Liu, City University of Hong Kong
Abstract: In the past decades, power electronics converters have been increasingly integrated into power grids. Generally, grid-connected converters exhibit nonlinear dynamics, thus inevitably resulting in the risk of transient instability. This talk will discuss the effects of the nonlinear behavior of grid-connected converters on their transient stability. Specifically, the talk focuses on dynamics in three scales: synchronization control, output regulation, and converter interaction. The conventional methods of power electronics address these dynamics in a separate and linear way. However, such a standard approach becomes invalid for the problem of transient stability. The talk will employ nonlinear methods to explain the mechanisms behind the rich oscillation phenomena of grid-connected converters. Moreover, the analysis is design-oriented and consequently, yields practical design guidance for enhancing transient stability.
Speaker’s Bio:Chao Charles Liu is currently pursuing the Ph.D. degree in the Department of Electrical Engineering, City University of Hong Kong, Hong Kong. He received the B.S. and M.S. degrees in electrical engineering from Wuhan University, Wuhan, China, in 2018 and 2021, respectively. His research interests include transient stability of grid-connected converters, applications of nonlinear dynamics, and smart meter data analytics.
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